diff --git a/plat/juno/bl1_plat_setup.c b/plat/juno/bl1_plat_setup.c
index 5804682..e27e394 100644
--- a/plat/juno/bl1_plat_setup.c
+++ b/plat/juno/bl1_plat_setup.c
@@ -37,7 +37,6 @@
 #include <mmio.h>
 #include <platform.h>
 #include <platform_def.h>
-#include <tzc400.h>
 #include "../../bl1/bl1_private.h"
 #include "juno_def.h"
 #include "juno_private.h"
@@ -150,36 +149,6 @@
 }
 
 
-static void init_tzc400(void)
-{
-	/* Enable all filter units available */
-	mmio_write_32(TZC400_BASE + GATE_KEEPER_OFF, 0x0000000f);
-
-	/*
-	 * Secure read and write are enabled for region 0, and the background
-	 * region (region 0) is enabled for all four filter units
-	 */
-	mmio_write_32(TZC400_BASE + REGION_ATTRIBUTES_OFF, 0xc0000000);
-
-	/*
-	 * Enable Non-secure read/write accesses for the Soc Devices from the
-	 * Non-Secure World
-	 */
-	mmio_write_32(TZC400_BASE + REGION_ID_ACCESS_OFF,
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_CCI400)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_PCIE)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_HDLCD0)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_HDLCD1)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_USB)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_DMA330)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_THINLINKS)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_AP)		|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_GPU)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_SCP)	|
-		TZC_REGION_ACCESS_RDWR(TZC400_NSAID_CORESIGHT)
-		);
-}
-
 #define PCIE_SECURE_REG		0x3000
 #define PCIE_SEC_ACCESS_MASK	((1 << 0) | (1 << 1)) /* REG and MEM access bits */
 
@@ -200,7 +169,6 @@
 void bl1_platform_setup(void)
 {
 	init_nic400();
-	init_tzc400();
 	init_pcie();
 
 	/* Initialise the IO layer and register platform IO devices */
diff --git a/plat/juno/bl2_plat_setup.c b/plat/juno/bl2_plat_setup.c
index 717cfbb..ba4c5be 100644
--- a/plat/juno/bl2_plat_setup.c
+++ b/plat/juno/bl2_plat_setup.c
@@ -162,6 +162,9 @@
 
 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout = *mem_layout;
+
+	/* Initialise the IO layer and register platform IO devices */
+	io_setup();
 }
 
 /*******************************************************************************
@@ -171,8 +174,8 @@
  ******************************************************************************/
 void bl2_platform_setup(void)
 {
-	/* Initialise the IO layer and register platform IO devices */
-	io_setup();
+	/* Initialize the secure environment */
+	plat_security_setup();
 }
 
 /* Flush the TF params and the TF plat params */
diff --git a/plat/juno/juno_private.h b/plat/juno/juno_private.h
index 0dac03a..bb2548f 100644
--- a/plat/juno/juno_private.h
+++ b/plat/juno/juno_private.h
@@ -108,6 +108,9 @@
 			  uintptr_t *dev_handle,
 			  uintptr_t *image_spec);
 
+/* Declarations for security.c */
+void plat_security_setup(void);
+
 /*
  * Before calling this function BL2 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
diff --git a/plat/juno/plat_security.c b/plat/juno/plat_security.c
new file mode 100644
index 0000000..851a39e
--- /dev/null
+++ b/plat/juno/plat_security.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <debug.h>
+#include <tzc400.h>
+#include "juno_def.h"
+
+/*******************************************************************************
+ * Initialize the TrustZone Controller. Configure Region 0 with Secure RW access
+ * and allow Non-Secure masters full access
+ ******************************************************************************/
+static void init_tzc400(void)
+{
+	tzc_init(TZC400_BASE);
+
+	/* Disable filters. */
+	tzc_disable_filters();
+
+	/* Configure region 0. Juno TZC-400 handles 40-bit addresses. */
+	tzc_configure_region(0xf, 0, 0x0ull, 0xffffffffffull,
+			TZC_REGION_S_RDWR,
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_CCI400)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_PCIE)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_HDLCD0)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_HDLCD1)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_USB)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_DMA330)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_THINLINKS)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_AP)		|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_GPU)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_SCP)	|
+			TZC_REGION_ACCESS_RDWR(TZC400_NSAID_CORESIGHT));
+
+	/* Raise an exception if a NS device tries to access secure memory */
+	tzc_set_action(TZC_ACTION_ERR);
+
+	/* Enable filters. */
+	tzc_enable_filters();
+}
+
+/*******************************************************************************
+ * Initialize the secure environment. At this moment only the TrustZone
+ * Controller is initialized.
+ ******************************************************************************/
+void plat_security_setup(void)
+{
+	/* Initialize the TrustZone Controller */
+	init_tzc400();
+}
diff --git a/plat/juno/platform.mk b/plat/juno/platform.mk
index 4746536..2ac756e 100644
--- a/plat/juno/platform.mk
+++ b/plat/juno/platform.mk
@@ -47,10 +47,12 @@
 				plat/juno/aarch64/plat_helpers.S	\
 				plat/juno/aarch64/juno_common.c
 
-BL2_SOURCES		+=	lib/locks/bakery/bakery_lock.c		\
+BL2_SOURCES		+=	drivers/arm/tzc400/tzc400.c		\
+				lib/locks/bakery/bakery_lock.c		\
 				plat/common/aarch64/platform_up_stack.S	\
 				plat/juno/bl2_plat_setup.c		\
 				plat/juno/mhu.c				\
+				plat/juno/plat_security.c		\
 				plat/juno/aarch64/plat_helpers.S	\
 				plat/juno/aarch64/juno_common.c		\
 				plat/juno/scp_bootloader.c		\